Air-brake angle cock



Aug. 10,1926, 1,595,302

J. G. HAYES AIR BRAKE ANGLE cocK v Filed May 4, 1925 2 Sheet-s-Sheet 1 Aus -10 1926.

J. G. HAYES AIR BRAKE ANGLE 000K Filed May 4. 1 923 '2 sheets-sheet 2.

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I??? "Z 152335 J4 Patented Aug. 10, 1926.

UNITED STATES PATENT OFFICE.

JOHN G. HAYEs, or Er. raso, TEXAS.l

AIR-BRAKE ANGLE COCK.

Application filed May 4,

This invention relates to improvements in angle-cocks, for train air brake systems, of the class commonly used to connect the air hose to the train pipe line between the cars, and is intended to be used with standard air brake equipment now in use and with the modern cross-compound pumps'that are designed to overcome small air leaks in the air lines and couplings.

Objects of the present invention are: to provide an angle-cock that will cause draining of the air, from both sides of the anglecock, should the plug become partially turned to cut-ofi position, thereby causing the brakes to be set so that the train cannot start until all angle-cocks are turned to the full on position, i. e.. the position in which there is an uninterrupted path for the air to flow through the train line to prevent the brakes from becoming applied or set; the provision in such an angle-cock for the air to low from the front of the train line, with resultant application of the brakes, should the plug be turned to full cut-oti'position at r the front of any car: the provision of such an angle-cock that will drain the train line from the rear of any car to the caboose should the cock become fully cut-oil:l at the rear of any car; the provision of an anglecock that will so reduce the air that no modern cross-compound pump will overcome it when the plug is turned towards cut-oil| position; the provision of such an angle-cock that will accomplish the abovementioned objects and yet does not require additional means to close the train pippe line when a car is detached from the rest ot' the train; and such other improvements and advantages in construction and operation as are found to obtain in the structure hereinafter described and claimed.

V,In the accompanying drawings, forming a part of this specification. and showinggfor purposes of exemplication, a preferred form and manner in which the invention may be embodied and practiced; but without limiting the claimed invention specilically to such illustrative instance or instances: y A Figure 1 is a side elevation of an anglecock embodying the present invention;

Fig. 2 is a central vertical section through the same;

Fig. 3 is a top plan view of 'the same, indicating the position of the handle when 1923.. Serial No. 636,544.

the plug is at a partial position and at a full cut-'off position;

Fig. 4 is a horizontal section taken through the plug and casing, and showing the plug in the on7 positioinand the positions of the ports and passages in the on position; 1

Fig. 5 through the plug and casing, and showing the plug in Vpartial cut-off position, and showing the positions of the passage and ports in such partial cut-off position;

Fig. 6 is a horizontal section taken through the plug and casing, showing the position of the plug in full cut-o position, and the arrangement of the plug passage and the plug and casingl ports in such linal cut-ofi' position.

In the embodiment illustrated in the drawings, the invention is incorporated in an angle-cock that is ldesigned for railway air brake appliances. For convenience, the present description will be conlined to the illustrated embodiment ol the invention; features of 'the invention are,'ho'wever, susceptible ot other valuable applications;

hence, the invention'is not confined in'scopeto the specific use and embodiment herein described as an illustrative example.

VIn the illustrated embodiment of the invention there is shown on the drawings an angle-cock of the usual standard design, comprising,r a casing 10 having one end 11 adapted to be connected with the train pipe 12, and having the usual downwardly eX- tending portion 13 at its other end adapted to 'be connected with the usual hose member 14. Forconvenienc'e, the'end 11 will be referred to as the train pipe side. andthe 'end 13 will befreferred to as the hose pipe side. .The casingA is centrally bored at the top 15 and bottom 16 to receive a rotatable is ya horizontal section taken plug 17, having a head 18 upon which a handle 19 visipositioned to rotate' said plug to on and cut-ott positions. The handle' 19 is provided with a downwardly extending projection 2O adapted to make contact with a stop 21 when the-plug is in the on7 position and also to make contact with another stop 22 when the plug is rotated to full cut-olf position The casing is centrally bored so as to provide inclined surfaces 23 to receive the plug 17 which is also given a tapered form so that when it is inserted into the casing through the opening in the bottom 16 no additional securing means will be necessary at the top 15 of the casing to maintain the plug in position. The bottom 2d of the plug is provided with an annular projection 25 providing a surface 2,6 against which a tension spring 27 bears. The lower end of said spring 27 is contained lwithin a pocket 28 oi cap 29 that is screwed onto the bottom 16 to close said opening and maintain said plug in air-tight engagement with said casing. i

The casing 10 has an outlet port 31, preferably about 1/2 inch in diameter, in one side thereof', and said port is off-set with respect to the center of the plug 17 in order that a communication may be made between the elongated central plug passage 32 and the outlet casing port 31, upon rotation of' the plug either tov partial or comple-te cut-off position. The passage 32 ali'ord's communication for air from either the hose side to the train pipe side, or vice versa, when the plug is rotated to the on7 position, as shown in Fig. et, thereby affording an uninterrupted path for the aix` in its passage through thecasing passagewav 33. The passage 32 in the plug is defined bv the sides 34 and 35' of the plug and in the side 34 there is provided a port 36, located belo-w the plane of the casing port 3l., that is oil-set with respect to the center ot' said plug, towards the hose pipe side, a distance suilicientthat, when the plug is partially rotated, as shown in Fig. 5, an amount sufiicient to partially cut offv the pf hose pipe side from the train pipe side the air will pass through the port 36 to the passage 32 and outthrough the outlet port 31 and at the same time the air from the trai-n pipe sid'e will pass into the passage 32 and out through the outlet port 31 and cause a reduction in the amount of air which, with the modern air brake svstems now in use, will cause the brakes to be set on all of the cars, both to the rear and to the front.

Should the plug be rotated to substantially full cut-oiiiposition` then the side of the nlug will' the train pipe side. but the hose pipe side will' bleed, asf shownv in Fig. 6, through ports 36. passage 32. and outlet port 31, causing continued application ofv the brakes, towards the hose pipe side, until the nlugvis rotated to on7 posit-ion, as shown in Fig. 4?-, It will be apparent. therefore, that should the plugbe giver-1I a partial turn the train pipe will bleed' from both sides ot the angle-cock; but shouldl the angle-cock bev positioned on the rearl of anv car, and the plug be turned' to fully cut-oit position, it will drain the train line from said rear end clearto the caboose andv cause the brakes to be applied. Should: the angle-Cock bepositioned at front ot anv car'.y and the plfug turned to full cut-olf position, it will seal thetrain pipe side and bleed the train line from the lont ot such car clear to the locomotivey and'r cause application of the brakes. It will also be apparent, from the foregoing description, that an angle-cock constructed in accordance with this invention having` ports of substantially the dimension mentioned will be ei- 'lective in reducing the pressure in the air lines in suiiicient amount to cause application of the brakes and continue to so reduce the air that no modern cross-compound pump will overcome such bleeding, and it will also be apparent that, when a car is cut ofi, for instance in switching cars in the yards, no additional cap will be required to seal the train pipes, for when the plug is turned to full cut-od position the side 35' of the plug will seal such train pipe line.

The invention as hereinabove set forth is embodied in a articular form but may be variously embodied within the scope of the claims hereinafter made.

I claim:

l. In an angle-cock, the combination with the valve casing having a port in one side and an air passage leading therethrough from the hose side to the train pipe side; of a rotatable plug in said casing, said plug having a central passage opening therein, said plug also having a portleading through one side of said plug to said passage opening, said plug port being off-set with respect vto the center of said plug so that upon rotation of said plug` an amount sufficient normally to cut olf said cock from the hose side the air will pass through said port to the air passage openingl in said plug and out to the atmosphere through the port inv the casing; the air passage opening in said plug` Ibeing of sutlicient width to allow the air troni the train pipe side to pass out through the casing port, together with the air from the hose side, upon rotation of said plug to anycutofi position except iull'cut-oif position andA when said plug is turned to iullcut-oli" posi'- tion the train pipe side is thenV sealed by said plug in such full cut-ofi position.

2. In an angle-cock, thev combination'with the casing, of' a rotatable plug therein, said casing havinga passage 'leading vfrom the hose pipe side to the train pipe' side; said casing also having a port in one side, said. port being off-set with respect to the ycenter ot said plug; said plug having an air passage opening'therein' to-f'allow flow ot air through said casing when said'plug is rotated to the on position, said plug opening communicating with said casing port upon rotation of saidplug towards cut-off position; said plug also having a port in one side, off-set with respect to the center ot said plug` a distance suiiicient to cause a path for the air `from the hose side, through said plug port, said plug` passage opening, and said casing port, upon rotation'ot said plug an amount suiiicient to cause said hose pipe sideto be cut off fromv said angle-cock;

said plug allow paM ag said casing port; at the saine time that the air is passing' through the plug port; upon rotation; ot the plug an amount suiicient to substantially cut oli' the hose pipe side from said train pipe side, except when the plug is turned substantially to full cut-o position, and then said plug?- seals the train pipe side to Stop passage or air therefrom but allows passage of air trom the hose pipe side through said plug port7 plug passage and casing port out to the atmosphere.

3. ln an angle-cock, in combination: a casing; a plug therein; said casing having a port therein; said plug having a passage passage opening being arranged to s Oe of air from the train pipe to therein permitting communication from a hose pipe through the plug to the train pipe; a port in one side orP said plug allowing air to pass to the plug passage and then to the casing port when the plug is turned to any substantially cut-oil position; said plug passage being arranged in said plug so as to allow passage or" air from the train pipe side to the casing port when the plug is rotated to any substantially cut-oli position except full cut-oli position when the train pipe side is then sealed at such full cut-od position.

4l. ln an angle-cock, in combination: a casing; a plug in said casing; .said casing having a port therein; said plug having a passage therein to permit communication through said lufy when said plug is in the C D A C on position, Said plug having a port therein communicating with said plug passage; said plug passage communicating with saiid casing port when the plug is rotated any amount suiiicient to substantially cut oli the passage from one end of said casing to the other; both said ports being lalrranged to overcome modern cross-compound pumps and cause application of bralres and to indicate to the engineer that an angle-cock is either in partial or full cut-o position.

5. ln an angle-cock; in combination: a casing; a plug in said casing; said casing having a port therein; said plug having a passage therein to permit communication through said plug when said plug is in the on position; said plug having a port therein communicatingwith said plug passage; said plug passage communicating with said casing port when the plug is rotated an amount sufficient to cut E the passage of substantial amount of air from one end of said casing to the other; both said ports being arranged to overcome modern crossecompound pumps and drain the train line from locomotive to Caboose when' the valve is partly cut oli.

6. In an angle-cock, in combination: a casing; a plug in said casing; said casing having a port therein; said plug also having a passage therein to permitl communication through said plug when said plug is in the on position; said plug having a port therein communicating with said plug passage; said plug passage communicating with said casing port when the plug is rotated an amount su'liicient to cut off the passage of substantial amount of air from one end of said casing to the other; both said ports being arranged to overcomemodern crosscompound pumps and drain the train line from the rear of any car to Caboose upon complete cut off of said vatlve at the rear of any car.

7. ln an angle-cock, in combination: a casing; a plug in said casing; said casing having a port therein; said plug also having a passage therein to permit communication through said plug when said plug is in the on position; said plug having a port therein communicating with said plug passage; siaid plug passage communicating with said casing port when the plug is rotated an amount suiiicient to cut ott1 the passage of sub stantial amount of air from one end of said casing to the other; both said ports being arranged to overcome modern cross-compound pumps and so reduce the air and thereby cause application of the brakes on the cars towards the front of the train should the angle-cock become completely cut oli" at the front of any car.

JOHN G. HAYES. 

